Magento get Product, Shipping, Billing and customer info using order Id.

$orderId = '10000015';
$order = Mage::getModel('sales/order')->load($orderId);
// For getting Customer Order Info
$order->getCustomerId(); // get customer Id
$order->getCustomerEmail(); // get customer email

 print_r($order->getData()); //show all order data


// For getting Product Order Info
$items = $order->getAllItems();
      foreach ($items as $itemId => $item){
$item->getName(); // get order product name
print_r$item->getData()); //show all order product data

}

// For getting Shipping Order Info
  $shippingId = $order->getShippingAddress()->getId();
       $shipAddress = Mage::getModel('sales/order_address')->load($shippingId);
        print_r($shipAddress->getData());
If you want Billing/Shipping Country name see here
   
// For getting Billing Order Info

     $billingId = $order->getBillingAddress()->getId();
     $billAddress = Mage::getModel('sales/order_address')->load($billingId);
      print_r($billAddress->getData());